CN1115264A - Coal flotation agent compsn. and its prepn. method - Google Patents
Coal flotation agent compsn. and its prepn. method Download PDFInfo
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- CN1115264A CN1115264A CN 94111050 CN94111050A CN1115264A CN 1115264 A CN1115264 A CN 1115264A CN 94111050 CN94111050 CN 94111050 CN 94111050 A CN94111050 A CN 94111050A CN 1115264 A CN1115264 A CN 1115264A
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Abstract
The composition in the form of yellow or dark red oily liquid for floatation of different kinds of coal is prepared from mineral oil, pine oil, X oil, organic solvent, acid, alkali and emulsifier through proportioning, mutual dissolving, acidifying, alkali neutralization and emulsifying, and features high floatation speed, selectivity and output rate of refined coal, less consumption and both foaming and capturing performances.
Description
The present invention relates to a coal with floating agent composition and preparation method, belong to the floating agent class, be applicable to the flotation of coal slime in the coal washing industry.
With floating agent coal slime being carried out flotation, is that coal washing industry is for improving important process means of coal utilizaton rate.In the exploration of decades, coal is with the single collecting agent that floating agent has been adopted by the initial stage of starting, develops into the second generation that foaming agent and collecting agent are used; Until having entered with nonionic, the high efficiency third generation in recent years.Coals a large amount of, various performances are come out one after another with floating agent.Common floating agent has the methyl isobutyl carbinol (NIBC) of the U.S. at present; 4.4 dimethyl-1-defend alcohol; ACC0AL4433; Aliphatic acid; 2-ethyl hexanol of the Soviet Union; AAP-1; AAP-2; 1.3 two oxa-ethane derivatives and oxide etc.In the last few years, domestic some floating agents that also emerged in large numbers, realized that industrialized product has: GF oil, FS-202 are caught and are changed agent, H8 series, Fu series flotation wet goods.The sequential use of these numerous medicaments has not only driven the development of floating agent, brings hope also for really the flotation of coal slime.
But, because most pharmaceutical agents is unifunctional, although wherein also there be several having concurrently to bubble and the seizure dual-use function; But because of its prescription form unreasonable, make the floating agent in use can not be fully effectively and the surface action of coal grain, cause the invalid waste of a large amount of medicaments.Be in more than the 1.65kg/ ton dry coal mud as average oil consumption in the coal slime flotation of China.Obviously, this can strengthen the flotation cost of coal slime.
The object of the present invention is to provide the flotation activity good, selectivity is strong, oil consumption is low, has the efficient coal floating agent and preparation method thereof that bubbles with the dual performance of collecting concurrently.
This efficient coal is formulated by mineral oil, pine tar, X oil, organic solvent, emulsifying agent, acid and an amount of alkali with the floating agent composition, it is characterized in that: in described floating agent composition, the shared percentage by weight of various compositions is respectively: mineral oil 20-40; Pine tar 20-30; X oil 10-25; Organic solvent 10-15; Acid 3-6; Emulsifying agent 3-5, alkali is an amount of.
The preparing process of this floating agent is as follows:
At first mineral oil, pine tar, X oil and the organic solvent that will add earlier in the reaction kettle by proportional quantity fully dissolves each other under 40 ℃-80 ℃ temperature, and second step was to add the concentrated sulfuric acid by proportional quantity to carry out acidification; The 3rd step was after above-mentioned reacting completely, and adjusted the pH value to 6-8 of combination solution again with alkali; The 4th step was to add emulsifying agent to carry out stirring and emulsifying.
In technique scheme, used mineral oil, employing be molecular structure substantially the symmetry, substantially with the combination of covalence key form, belong to nonpolar mineral oil between the intramolecule atom.
The organic solvent that adopts in the described composition is alcohols (CnH
2n+1OH), as propyl alcohol, ethanol, methyl alcohol, be good with ethanol especially.
The acid adjustment basicity alkali that adopts in the described composition is sodium acid carbonate or NaOH.
The emulsifying agent that adopts in the described composition is OP-10, and is average first-class, is good with average first especially.
Coal floating agent according to above technical scheme proportioning preparation, compare with existing each similar medicament, its advantage is: not only have concurrently and bubble and the dual performance of collecting, and applicability is wide, flotation bottle coal, rich coal, burnt lean coal effectively also can reach the ideal flotation effect to the high oxidized coal of degree of oxidation, difficult float coal that granularmetric composition is thin simultaneously; And the average oil consumption only is 1/3～1/2 of a national average oil consumption.
Average first embodiment 1 30 40 10 10 6 an amount of 4 embodiment, 2 25 30 20 15 5 an amount of 5 embodiment, 3 25 35 15 15 6 an amount of 4 embodiment, 4 20 35 25 14 3 an amount of 3 embodiment 5 30 20 25 15 5 an amount of 5 of pine tar mineral oil X oil ethanol soda acid
When actual fabrication, press the characteristic of selected ature of coal earlier, in ratio range of the present invention, select best proportioning, then at first that proportioning is good mineral oil, pine tar, X oil, organic solvent (propyl alcohol, ethanol or methyl alcohol), preferably ethanol is put into the reaction kettle and is mixed, and they is fully dissolved each other under 40 ℃～80 ℃ temperature.Press proportional quantity then on this basis and add the concentrated sulfuric acid, finish acidification.Carried out 1-1.5 hours in this reaction, reaching reacts completely adds proper amount of sodium hydroxide or sodium acid carbonate afterwards again, makes the pH value of solution be controlled at 6-8.Add polyoxyethylene nonylphenol ether-10 or average first (is the best with average first) at last again, make it in the reaction kettle, to obtain sufficient stirring and emulsifying, with regard to the coal floating agent that is finally required.
This coal floating agent is yellow to the kermesinus oily liquids, its density O
20 25=0.89 ± 0.02, viscosity≤7mpa.S, moisture content is less than 3%; Solubility in water is 0.5 ‰～1 ‰, is dissolved in multiple organic solvent.Floating agent by such scheme production is neutral simultaneously, to had no corrosive effect on metals; Belong to actual nontoxic and non-carcinogenic material, harmless to operator ' s health.
In actual use, why can produce above this effect, its main cause be because: mineral oil is a kind of hydrocarbon compound, belong to non polar reagent, intermolecular atom forms with covalent bonds, molecular structure is symmetry substantially, chemism is little, in water, can not be dissociated into ion, therefore solubility is little in water, and the hydrophobicity height easily adsorbs Nonpolar Solute according to non-polar adsorbent, polar adsorbent easily adsorbs the rule of polar solute, and non polar reagent has the good adsorption performance for the natural thinning aqueous mineral bituminous coal that the plane of disruption is molecular link; Pine tar is the indefinite terpene mixture of a composition, have good frothing capacity: X oil is by the alcohol that accounts for greatly about 50%, ether, numerous and diverse material that Ester is formed, this oil is soluble in water, chemical property is stable, stronger frothing capacity and certain collecting performance are arranged, flotation speed is fast, when they press certain proportioning, through high-temperature stirring, when the product that emulsification forms carries out coal floatation, mineral oil orientation with collecting performance is adsorbed on the surface of coal grain, its nonpolar group points to air, makes coal grain surface form hydrophobic film, and the pine tar with frothing capacity, the agent molecule of X oil also produces aligning of molecule on gas-liquid interface, reduced the surface tension of water, cause more stable hydration rete, strengthen the mechanical strength of bubble, so that bubble is difficult for vanishing, its nonpolar group points to air, the collecting agent molecule of easier like this and coal grain adsorption produces suction-operated, reaches the purpose of coal floatation, from embodiment once can fully proving its effect to five.
Claims (6)
1, a kind of coal is combined by mineral oil, pine tar, X oil, organic solvent, emulsifying agent and the concentrated sulfuric acid and an amount of alkali with the floating agent composition, it is characterized in that:
In A, the described floating agent composition, the shared heavy percentage of various compositions is respectively: mineral oil 20-40; Pine tar 20-30; X oil 10-25; Organic solvent 10-15; Acid 3-6; Emulsifying agent 3-5%, alkali is an amount of;
B, described floating agent preparation of compositions technology are: at first by proportional quantity mineral oil, pine tar, X oil and organic solvent are put into the reaction kettle, it is fully dissolved each other under 40 ℃～80 ℃ temperature; Second step was to add the concentrated sulfuric acid by proportional quantity to carry out acidification; The 3rd step was to carry out 1-1.5 hours in above-mentioned reaction, sufficient reacting fully after, adding an amount of alkali again, to make the PH of combination solution be 6-8; The 4th step was to add emulsifying agent medicament is carried out stirring and emulsifying.
2, coal according to claim 1 is characterized in that with floating agent composition and preparation method described mineral oil is molecule structure symmetry substantially, forms the nonpolar class mineral oil of combination substantially with covalence key between the intramolecule atom.
3, coal according to claim 1 is characterized in that with floating agent composition and preparation method used organic solvent is alcohols (CnH
2n+1OH), propyl alcohol, ethanol, methyl alcohol, be good with ethanol especially.
4, coal according to claim 1 is characterized in that with floating agent composition and preparation method described acid adjustment basicity alkali is sodium acid carbonate or NaOH.
5, coal according to claim 1 is characterized in that with floating agent composition and preparation method used emulsifying agent is OP-10 or average first, is good with average first especially.
6, coal according to claim 1 is characterized in that with floating agent composition and preparation method used acid is the concentrated sulfuric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94111050 CN1115264A (en) | 1994-06-21 | 1994-06-21 | Coal flotation agent compsn. and its prepn. method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94111050 CN1115264A (en) | 1994-06-21 | 1994-06-21 | Coal flotation agent compsn. and its prepn. method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1115264A true CN1115264A (en) | 1996-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94111050 Pending CN1115264A (en) | 1994-06-21 | 1994-06-21 | Coal flotation agent compsn. and its prepn. method |
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| CN (1) | CN1115264A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6959815B2 (en) | 2002-01-28 | 2005-11-01 | The Governors Of The University Of Alberta | Selective reactive oily bubble carriers in flotation processes and methods of generation and uses thereof |
| CN100387355C (en) * | 2006-04-04 | 2008-05-14 | 唐山易通科技开发有限公司 | Multifunctional energy-saving jerking apparatus and coal separating method |
| CN106622676A (en) * | 2016-12-23 | 2017-05-10 | 中南大学 | Mineral flotation foaming agent and preparation method and application thereof |
| CN111215253A (en) * | 2020-01-22 | 2020-06-02 | 中国矿业大学 | Low-rank coal flotation reagent and flotation method |
-
1994
- 1994-06-21 CN CN 94111050 patent/CN1115264A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6959815B2 (en) | 2002-01-28 | 2005-11-01 | The Governors Of The University Of Alberta | Selective reactive oily bubble carriers in flotation processes and methods of generation and uses thereof |
| CN100387355C (en) * | 2006-04-04 | 2008-05-14 | 唐山易通科技开发有限公司 | Multifunctional energy-saving jerking apparatus and coal separating method |
| CN106622676A (en) * | 2016-12-23 | 2017-05-10 | 中南大学 | Mineral flotation foaming agent and preparation method and application thereof |
| CN106622676B (en) * | 2016-12-23 | 2018-11-30 | 中南大学 | A kind of mineral flotation foaming agent and its preparation method and application |
| CN111215253A (en) * | 2020-01-22 | 2020-06-02 | 中国矿业大学 | Low-rank coal flotation reagent and flotation method |
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